xref: /aosp_15_r20/external/llvm/test/Analysis/DemandedBits/basic.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; RUN: opt -S -demanded-bits -analyze < %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker; RUN: opt -S -disable-output -passes="print<demanded-bits>" < %s 2>&1 | FileCheck %s
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Worker; CHECK-DAG: DemandedBits: 0xFF for   %1 = add nsw i32 %a, 5
5*9880d681SAndroid Build Coastguard Worker; CHECK-DAG: DemandedBits: 0xFF for   %3 = trunc i32 %2 to i8
6*9880d681SAndroid Build Coastguard Worker; CHECK-DAG: DemandedBits: 0xFF for   %2 = mul nsw i32 %1, %b
7*9880d681SAndroid Build Coastguard Workerdefine i8 @test_mul(i32 %a, i32 %b) {
8*9880d681SAndroid Build Coastguard Worker  %1 = add nsw i32 %a, 5
9*9880d681SAndroid Build Coastguard Worker  %2 = mul nsw i32 %1, %b
10*9880d681SAndroid Build Coastguard Worker  %3 = trunc i32 %2 to i8
11*9880d681SAndroid Build Coastguard Worker  ret i8 %3
12*9880d681SAndroid Build Coastguard Worker}
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